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Today's Topics:
1. Re: Are tuples really needed? (Peter Hall)
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Message: 1
Date: Tue, 28 Aug 2012 05:45:20 +0100
From: Peter Hall <[email protected]>
Subject: Re: [Haskell-beginners] Are tuples really needed?
To: "Carlos J. G. Duarte" <[email protected]>
Cc: [email protected]
Message-ID:
<CAA6hAk4=YzoE+1D42jOh2iYmxpp6=ZN7OkB=d-dvuhs+q8r...@mail.gmail.com>
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They are just syntactic sugar. You can just as easily create your own
tuple types:
data Tuple2 a b = Tuple2 a b
data Tuple3 a b c = Tuple3 a b c
data Tuple4 a b c d = Tuple4 a b c d
..etc
...except it's pretty ugly and none of the built-in Prelude functions
that use tuples will work with them (curry, uncurry, fst, snd, lookup,
zip,..).
Peter
On 28 August 2012 02:47, Carlos J. G. Duarte
<[email protected]> wrote:
> Sorry if this question is too insane, but I was wondering if tuples are
> really needed in Haskell. I mean, could tuples be generally replaced by
> variables unroll (f x y z) and explicit data types, or are there some things
> only possible to do via tuples?
>
> Thx in advance (and sorry if this looks silly).
>
>
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